A report from the Centers for Disease Control and Prevention finds that the percentage of Black teenagers who have had sex has dropped by 22 percentage points over the past 20 years. In 1991, 82 percent of Black teenagers reporting having had sex. In 2011, the percentage had dropped to 60 percent.

For all races and ethnic groups, 47 percent of teenagers in 2011 reported having had sex. This was down from 54 percent in 1991.

The data also showed that in 2011, 25 percent of Black teenagers who were sexually active have had four or more sexual partners. This was down from 43 percent in 1991.

The data is encouraging for efforts to combat the high rate of HIV-infection among young Blacks.